• 文献标题:   Graphene Oxide Induced High Crystallinity of SAPO-11 Molecular Sieves for Improved Alkane Isomerization Performance
  • 文献类型:   Article
  • 作  者:   DU YY, YAO HL, ZHAO L, YANG HM, WANG M, YUAN L, XU YH, LI JS
  • 作者关键词:   bifunctional catalyst, high crystallinity, graphene oxide, hydroisomerization, nonsolvent method
  • 出版物名称:   CHEMNANOMAT
  • ISSN:   2199-692X
  • 通讯作者地址:   Chinese Acad Sci
  • 被引频次:   3
  • DOI:   10.1002/cnma.201900349 EA JUL 2019
  • 出版年:   2019

▎ 摘  要

In the presence of graphene oxide (GO), highly crystallized SAPO-11 molecular sieves were prepared by a non-solvent method. The functional groups of GO bind with raw materials, with the formation of hydrogen bonds and acid amides, verified by the XPS analysis. The inorganic precursor and structure-directing agent molecules will be fixed on the surface of GO, increasing the reaction rate and crystallization for SAPO-11 preparation, confirmed by the XRD and BET results. Meanwhile, the IR analysis of the adsorption of pyridine indicates there are more acidic sites for the highly crystallized SAPO-11 sample. The resultant well-crystallized SAPO-11 molecular sieves exhibited greater isomer yield and better catalytic activity compared to traditional SAPO-11 prepared without GO.